Lock.



W. E. SPARKS.

LOCK.

' APPLICATION FILED APR. 17, 1914-' 1,167,533.. Patented Jan. 11, 1916.

2 SHEETS-SHEET I.

WlT/VESSES: INVENTOR am. 2 fl cuLUMBlA PLANOGRAPH 130., WASHINGTON, n. c.

W. E. SPARKS.

LOCK.

' APPLICATION FILED APR. II. I914.

Patented Jan. 11, 1916.

2 SHEETSSHEET 2.

W H/VEY 7 I fllfffllll 2 r. w ii-5 Q mar /Ill A INVENTOH y ATTO COLUMBIA PLANOORAPH 60-, WASHINGTON. D. c.

UNITED STATE PATENT OFFICE.

WILLIAM E. SPARKS, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO SARGENT & COMPANY, OF NEI/V HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LOCK.

Application filed April 1'7, 1914.

To all "whom it may concern.

Be it known that I, l/VILLIAM E. SPARKS, a citizen of the United States, residing in the city and county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a full, clear, and exact description.

This invention relates to locks, and more particularly to locks of that type in which a latch bolt is retractable from one side of the door by suitable key mechanism, and from the opposite side of the door by means of a knob, or the like.

The invention has special reference to locks in which the latch bolt is adapted to be given a double throw so as to serve as a dead bolt, that is to say, the latch bolt may be projected outwardly beyond the normal latching position and deadlocked in its projected position.

My improvements are especially applicable to rim night latches, but various features of the invention will find utility in locks of other types.

One of the primary objects of the invention is to provide simple, efficient means for effecting a double throw of the latch bolt by actuation of a device independent of the knob, which device corresponds generallv in type and location to the means commonly employed in night latches for deadlocking the latch bolt in the latching position. In my improved lock, this means for effecting the double throw, or abnormal projection of the bolt, also serves to deadlock the latter in the fully projected position.

It is also proposed to provide a lock wherein a hub connected with a suitable pin tumbler lock mechanism acts directly on mechanism for giving the bolt 'a double throw, and for deadlocking it in the double thrown position, independently of the hub actuated by the knob on the other side of the door.

The invention also aims to furnish a lock having a combined deadlocking and hold-back, or detent lever for the latch bolt adapted to beoperated by a suitable hub, or the like, so that by proper actuation of said lever the bolt may be either deadlocked in a projected position. or dogged in a position in which it is held back in the case free of the keeper or strike. I

More particularly, it is aimed to have Specification of Letters Patent.

Patented J an. 11, 1916.

Serial No. 832,587.

the hold-back lever arranged to project the latch bolt beyond the latching position, and deadlock it in fully projected position, as above stated.

To these and other ends, the invention consists in the novel features and combinations of parts to be hereinafter described and claimed. In the accompanving drawings, Figure 1 s a front elevation of a lock embodying my lnvention, with the latch bolt in the normal latching position. Fig. 2 is a similar view, showing the latch bolt in the fully projected position. Fig. 3 is a rear elevation of Fig. 1, with the back plate removed. Fig. 4c is a fragmentary rear elevation of Fig. 2, with the back plate removed. Fig. 5 is a view corresponding to Fig, 1, with certain parts broken awav. Fig. 6 is a view corresponding to Fig. 2, with certain parts broken away, and the key actuated hub omitted. Fig. 7 is a view similar to Fig. 3, showing the latch bolt fully retracted by the knob hub. Fig. 8 is a similar view showing the latch bolt dogged in its fully retracted position. Fig. 9 is a section on line 99 of Fig. 3. Fig. 10 is a section on line 101O of Fig. 1, showing the pin tumbler lock mechanism in its relation to the other parts. Fig. 11 is a detail of the actuating lever operated from the inside of the door. Fig. 12 is a detail of the combined bolt projecting deadlocking and detent lever. and Fig. 13 is a detail section on line 13-13 of Fig. 1.

I have shown my improvements applied to a rim night latch having a case 20, of usual form, and an ordinary latch bolt 21. The latch bolt is provided with parallel stems or shanks 22, 22 acted on in the customary way by springs 23, interposed between the head of the bolt, and a guide piece 24 supported within the case in any suitable manner. The shank or stem 22 carries a crosshead 25, with which cooperates a wing 26 on a hub 27. This hub 27 is adapted to be turned in the usual way by a knob 28. mounted in an opening in the front wall of the case at the inside of the door. As the hub 27 is turned from the position shown in Fig. 3 to that shown in Fig. 7, the latch bolt is retracted in an obvious manner. The parts so far described are old and wellknown and form in themselves no part of my invention.

The front wall of the case is provided with aslot 29, through which projects the shank of a button 30 located at the outside of the case and carried byone end of a lever 31 located within the case. The lever 31 is pivoted or fulcrumed intermediate of its ends on a post 32, which post is surrounded by a hub 33 on lever 31. That end of the lever which is opposite the button 30 cotiperates in a novel manner with the hub 27. It will be noted that when the lever 31 is in the position shown in Fig. 3, the extremity 3% of said lever is adapted to form an abutment for a shoulder 35 on the hub 27. The springs 23 tend to project the latch bolt into the abnormally projected, or double thrown position, shown in Fig. 2, but when the le ver 31 is in the position just mentioned it blocks such movement of the hub 27 and cross-head 25, as will permit the bolt to move to the double thrown position, and thereby holds the bolt in the normal latching position (Fig. 3i. In this position, the button 30 is at the bottom of the slot 29 (Fig. 1). .Vhen, however, the button 30 is pushed to the top of the slot 2-9 (with reference to Fig. 1), the lever 31, is turned on its axis into the position shown in Fig. 1, thereby permitting the bolt to move freely to the fully projected position under the influence of the bolt springs. On moving the button 30 back again to the other end of the slot 99, the extremity 3st of lever 31 engages the shoulder 35 on hub 27 in such a manner as to carry said hub in a counter clockwise direction .with reference to Fig. 4, and thereby returns the bolt to the normal latching position. It will therefore be seen that the lever 31 may be positioned to permit a free excursion of the bolt to the double thrown position, and to return the bolt to the latching position, said lever forming in eflect a movable stop for the hub 27.

The hub portion 33 of lever 31 is provided with a notch 33 in which is engaged a projection 33 of a lever 36. The lever 36, like the lever 31, is fulcrumed or swiveled on the post 32, and is held in place on said post by a screw 37. The engagement of the projection 33 in the notch '33 interlocks the levers 31 and 36 so that they move together in both directions. As lever 31 is moved from the position shown in Fig. 3 to the po* sition shown in Fig. 4, the head 37 of lever 36 moves down behind a projection 38 on the latch bolt head. In case the bolt in moving outwardly to the fully projected position tends to stick or bind, an inclined or beveled surface 39 on the head 37 of lever 36 abuts the projection 33 on the bolt in such a way as to force the bolt outwardly in a positive manner into the keeper. As the beveled surface 39 passes beyond the projection 38, a deadlockingsurface 10 on top of the head 37 comes into line with the projection 38in the rear of said projection, as. shown in Fig.

1, whereby the lever 36 deadlocks the bolt in the fully projected position. As the lever 31 is actuated by manipulation of the button 30 to withdraw the bolt to the normal latching position, the lever 36 is swung out of the path of the bolt, as shown in Fig. 3 to permit a subsequent full retraction of the bolt, if desired, as shown in Fig. 7. In this last named figure, the bolt is shown fully retracted by the knob hub 27. If it is desired to dog the bolt in its fully retracted position, the bolt is held back in the case while the lever 31 is actuated to swing the head 37 of lever 36 down into the path of the projection 38, in which position a' shoulder -11 abuts the pro ection 38, and prevents the bolt from shooting outward, as shown in Fig. 8. In this way, the lever 36 when operated by the actuating lever 31 having the button 30 may not only move the latch bolt to its double thrown position, by means of the beveled surface 39, and deadlock it in fully projected position by means of the deadlocking surface 10, but it may also dog the bolt in fully retracted position by means of the detent surface 11, all of which surfacescoopera'te with the projection 38 in the manner described.

The lever 36 is operated directly from the outside of the door by means of suitable key mechanism independently of the knob hub. To this end, the construction is substantially as follows: The rear portion of the lever is bifurcated or. forked so as to present arms 42 and 43. These arms cooperate with a hub 4141, j ournaled in the back plate 415 (Fig. 10), and adapted to be operated by suitable key mechanism, such as the pin tumbler lock mechanism 46, having the key rod 47. The bribed has a wing 48 adapted to contact with the cross-head 25 on the bolt shank 22, at a point remote from the point of contact of the knob hub 27, with said cross-head, whereby the key actuated hub 44 may retract thelatch bolt independently of the knob hub. The wing 48 of the key hub is also adapted to cooperate with the arms 12 and 13 of the lever 36, in order to move said lever in opposite directions, and with it the lever 31. Supposing that the parts are in the position shown in Fig. 5, and it is desired to give the bolt a double throw by manipulation of the key, the hub.

4k is so turned by the key mechanism as to engage the arm 43, thereby rocking the levers 36 and 31 on their common pivot, so that the bolt moves outward in the manner previously described. lVhen it is desired to withdraw the bolt from the fully projected position to the normal latching position by means of the key, the hub 424C is turned in the opposite direction so as to engage the arm 42 and shift the le ers back again into the position shownin Fig. 5. If, now, it is desired to retract the bolt by means of the keymechanism, the rotation of the key hub is continued in the same direction so that the hub 4-4, after disengaging the arm 42, Will engage the cross-head 25. In other Words, after the hub 44 has engaged the arm 42 for the purpose of Withdrawing the bolt from the fully projected to the latching position, it Will clear the arm 42,

engage the crosshead 25, and retract the outside of the door has the combined func-.

tions of the knob 28 and button 30 at the inside of the door, at least so far as the protraction and retraction of the bolt are concerned.

The foregoing description is necessarily a detailed one, in so far as it concerns the particular embodiment of my invention chosen for illustration, and I have not attempted to illustrate and describe the numerous modifications of the device Which may be adopted Within the scope of the invention as expressed in the claims.

What I claim is 1. In a look, a case, a latch bolt therein having a head and a stem, a guide member for the latch bolt stem, a spring embracing said stem and reacting against said guide member to push the bolt head out of the case beyond the normal latching position, a hub for retracting the bolt, means acting on the hub to hold the bolt in latching position in opposition to said spring, and means separate from said hub to release said holding means from the exterior of the case and thereby permit the free excursion of the bolt to an abnormally protracted position; substantially as described.

2. In a lock, a case, a latch bolt therein, a spring acting directly on the latch bolt to protract the same beyond the normal latching position, a hub for retracting the belt, a lever pivoted to the case and acting on the hub to hold the bolt in latching posi' tion in opposition to said spring, and means separate from the hub to release said holding means from the exterior of the case and thereby permit a free excursion of the bolt to an abnormally protracted position; substantially as described.

3. In a lock, a case, a latch bolt therein having a head and a stem, a guide member for the latch bolt stem, a spring embracing the stem between the bolt head and said guide member and tending to hold the latch bolt in an abnormally protracted position, a cross-head on the rear end of the stem, a hub for engaging said cross-head and re tracting the bolt, means acting on the hub to hold the latch bolt in latching position in opposition to said spring, and means separate from the hub to release said holding means from the exterior of the case and thereby permit a free excursion of the bolt from latching position to an abnormally protracted position; substantially as described. at. In a lock, a case, a latch bolt therein, a spring tending to push the latch bolt out of the case beyond the normal latching position, a hub for retracting the bolt, a lever pivoted to the case intermediate of the ends of said lever and adapted to act at one end on the hub to hold the latch bolt in latching position in opposition to said spring, and an operating button on the other end of said lever for releasing the bolt from latching position; substantially as described.

5. In a lock, a case, a latch bolt therein, a spring tending to push the latch bolt out of the case beyond the normal latching position, a hub for retracting the bolt, means acting on the hub to hold the latch bolt in latching position in opposition to said spring, means separate from the hub to release said holding means trom the exterior of the case, and means operating automaticallv on the release of said holding means for engaging the bolt head and thereby giving the bolt a double-throW; substantially as described.

6. In a lock, a case, a latch bolt therein. a spring for protracting the latch bolt, a hub for retracting the latch bolt, a lever acting on the hub to hold the latch bolt in latching position in opposition to said spring, means for operating said lever, and a second lever actuated by said last means for exerting leverage on the latch bolt head and thereby giving the latch bolt a double-throw; sub stantially as described.

7. In a look, a latch bolt, means for retracting the same, and means separate from said retracting means for stopping back the bolt in fully retracted position or giving said bolt a double-throw; substantially as described.

8. In a look, a latch bolt, and a lever for giving the latch bolt a double-throw or stopping the latch bolt back in the case in fully retracted position; substantially as described.

9. In a lock, a latch bolt, a lever for giving the bolt a double-thro\v, deadlocking it in double-thrown position, and deadlocking it in fully retracted position, and means for operating said lever; substantially as described.

10. In a lock, a case, a latch bolt therein, a combined double-throw and hold-back lever for the latch bolt pivoted to said case independently of the bolt, and means for actuating said lever; substantially as described.

11. In a lock, a latch bolt, a case therefor, a lever for exerting leverage on the bolt head and thereby giving the bolt a doublethrow, means for pivoting said lever to the case, means on said lever for holding the bolt in fully retracted position, and means for operating said lever; substantially as described.

12. In a lock, a latch bolt, a case therefor, a double-throw lever for said latch bolt, means for pivoting said lever to the case, and means for operating said lever from either side of the door; substantially as described.

13. In a lock, a latch bolt, a case therefor, acombined double-throw and hold-back lever for said bolt pivoted to said case, and

means for operating said lever from either side of the door; substantially as described.

14 In a lock, a latch bolt, manually operable means for retracting the same from one side of the door, and key actuated means independent of said retracting means and operable from the opposite side of the door,

for giving the latch bolt a double-throw, retracting it, and dogging it in fully retracted position; substantially as described.

15. In a lock, :1 case, a latch bolt therein, a hub for retracting said latch bolt, a knob for operating said hub, means cooperating with said hub to hold the bolt in latching position, an operating member for retracting said holding means, and a double-throw device for said latch bolt operatively connected with said operating member; substantially as described.

16. In a lock, the combination of a latch bolt, a member at one side of the door for retracting the bolt, a member at the same side of the door for giving the bolt a doublethrow, and for dogging it in fully retracted position, and key mechanism at the opposite side of the door for retracting the bolt, giving it a double-throw, or dogging it in fully retracted position; substantially as described.

In witness whereof, I have hereunto set my hand on the 141th day of April, 1914.

WILLIAM E. SPARKS.

Witnesses:

MABEL A. BUSSE, FRANCES HOWARD.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

ISO 

